#pragma once

#include <iostream>
#include <string.h>
#include <string>
#include <sys/types.h>
#include <sys/socket.h>
#include "log.hpp"
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <cstdlib>
#include <sys/wait.h>
#include <signal.h>
#include <pthread.h>
#include "ThreadPool.hpp"
#include "Task.hpp"
#include <vector>
#include <algorithm>

namespace server
{

    using namespace std;

    vector<int> v;

    enum
    {
        USAGE_ERR = 1,
        SOCKET_ERR,
        BIND_ERR,
        LISTEN_ERR
    };

    const static uint16_t gport = 8080;
    static const int gbacklog = 5;

    class TcpServer;
    class ThreadData
    {
    public:
        ThreadData(TcpServer *self, int sock)
            : _self(self), _sock(sock)
        {
        }

        ~ThreadData()
        {
        }

    public:
        TcpServer *_self;
        int _sock;
    };

    class TcpServer
    {
    public:
        static void *threadRoutine(void *args)
        {
            pthread_detach(pthread_self());
            ThreadData *td = static_cast<ThreadData *>(args);
            td->_self->serviceIO(td->_sock);
            close(td->_sock);

            auto it = find(v.begin(), v.end(), td->_sock);
            if (it != v.end())
            {
                v.erase(it); // 删除第一个匹配的元素
            }

            delete td;
            return nullptr;
        }

        void serviceIO(int sock)
        {
            char buffer[1024];
            string s1;
            int m = 1;
            int q = 1;
            while (1)
            {
                ssize_t n = read(sock, buffer, sizeof(buffer) - 1);
                if (n > 0)
                {
                    // 目前我们把独到的数据当成字符串
                    buffer[n] = 0;
                    //buffer[n-1] = 0;
                    std::cout << "recv message: " << buffer << endl; // 打印服务器收到的消息

                    if(buffer != "online" && m == 1)
                    {
                        s1 = "please Enter name: ";
                        write(sock, s1.c_str(), s1.size());
                        m--;
                        continue;
                    }

                    if(q == 1)
                    {
                        s1 = buffer;
                        string s2 = "your name is "+ s1;
                        write(sock, s2.c_str(), s2.size());
                        q--;
                        continue;
                    }

                    string outbuffer = buffer;
                    for (int i = 0; i < v.size(); i++)
                    {
                        string s3 = s1 + " : " + buffer;
                        write(v[i], s3.c_str(), s3.size());
                    }
                }
                else if (n == 0)
                {
                    // 代表客户端退出
                    logMessage(NORMAL, "client quit, me too");
                    break;
                }
            }
        }

        TcpServer(const uint16_t &port = gport)
            : _port(port), _listensock(-1)
        {
        }

        void initServer()
        {
            // 1、创建socket文件套接字对象
            _listensock = socket(AF_INET, SOCK_STREAM, 0);
            if (_listensock < 0)
            {
                // 封装日志函数
                logMessage(FATAL, "create socket error");
                exit(SOCKET_ERR);
            }
            logMessage(NORMAL, "create socket success");

            // 2、bind绑定自己的网络信息
            struct sockaddr_in local;
            memset(&local, 0, sizeof(local));
            local.sin_family = AF_INET;
            local.sin_port = htons(_port);
            local.sin_addr.s_addr = INADDR_ANY;
            if (bind(_listensock, (struct sockaddr *)&local, sizeof(local)) < 0)
            {
                logMessage(FATAL, "bind socket error");
                exit(BIND_ERR);
            }
            logMessage(NORMAL, "bind socket success");

            // 3、设置socket为监听状态，因为必须时时刻刻关心是否向我发送请求
            // listen函数,能一直获取新连接，处理链接请求
            if (listen(_listensock, gbacklog) < 0)
            {
                logMessage(FATAL, "listen socket error");
                exit(LISTEN_ERR);
            }
            logMessage(NORMAL, "listen socket success");
        }

        void start()
        {
            for (;;)
            {
                // 4、server获取新链接
                struct sockaddr_in peer;
                socklen_t len = sizeof(peer);
                // 这里的sock是未来和客户端通信的fd文件描述符
                int sock = accept(_listensock, (struct sockaddr *)&peer, &len);
                if (sock < 0)
                {
                    logMessage(ERROR, "accept error, next");
                    continue;
                }
                logMessage(NORMAL, "accept a new link success");
                cout << "sock: " << sock << endl;

                v.push_back(sock);

                // demo3 多线程版
                pthread_t tid;
                ThreadData *td = new ThreadData(this, sock);
                pthread_create(&tid, nullptr, threadRoutine, td);
            }
        }

        ~TcpServer()
        {
        }

    private:
        int _listensock; // 不是用来通信的，是用来监听，获取新链接的，叫做listen套接字
        uint16_t _port;
    };
}
